Online PHP editor | refs for 3C4eO

<?php $f = new SplFileObject('php://memory', 'r+'); assert('$f instanceof Iterator'); $f->fwrite("line 1"); $f->rewind(); assert($f->valid() === true); assert($f->eof() === false); assert($f->current() === "line 1"); //assert($f->valid() === true); // fails assert($f->eof() === true);